CN1083503C

CN1083503C - Full-automatic washer

Info

Publication number: CN1083503C
Application number: CN96120138A
Authority: CN
Inventors: 釜野年恭; 宫野让; 鹿森保
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 1995-09-29
Filing date: 1996-09-25
Publication date: 2002-04-24
Anticipated expiration: 2016-09-25
Also published as: JPH0994374A; JP3183125B2; CN1153237A; KR100241960B1; KR970015882A

Abstract

This invention aims to solve the problem which can not increase the rotation speed of dehydration tank due to deformation and deflection of washing and dehydration tank caused by unbalanced dehydration enlarge the gap with the external part. The method adopts FRPP (containing 7-12% fiberglass) as the material of fluid balancer, increasing the strength of the circle. Therefore, washing and dehydration tank with low price, good productability and high rigidity is obtained. This can make full automatic washing machine with dehydration in higher speed.

Description

Automatic washing machine

The present invention relates to the automatic washing machine that anti-high speed dewatering turned round and had the washing and dewatering groove of high rigidity.

Circular the going up of being roughly of shell plates cylindraceous and flanged pin portion encircles the stainless steel washing and dewatering groove of existing automatic washing machine and the bottom has the discoid base plate of being roughly of recess to constitute by being roughly, the combination of various parts is connected by seam weldering, on encircle plastic fluid balancer be installed.

When the internal diameter of washing and dewatering groove was the 450-470 millimeter, dehydrating speed was 900-1100 rev/min.Under the situation of supreme ring, dehydrating speed is 800-900 rev/min.

On tape under Huan the situation, because the increase of part number is all undesirable aspect productivity and cost.

And under the situation of supreme ring, the distortion of the washing and dewatering groove that the imbalance during owing to dehydration causes and crooked etc. has enlarged the gap with water jacket, perhaps must not can not improve dehydrating speed then.

The object of the present invention is to provide a kind of do not have above-mentioned shortcoming, low price, productivity is good, rigidity is high washing and dewatering groove.

Automatic washing machine of the present invention, comprise: the bottom has the washing and dewatering groove of rotary vane, the water jacket of this washing and dewatering groove is housed with freely rotating, this water jacket is prevented the supporting arrangement of seismic support, the drive unit that this rotary vane and this washing and dewatering groove are driven by shell; Wherein: the shell plates that constitutes this washing and dewatering groove is made by corrosion resistant plate, in this shell plates upper inner of this washing and dewatering groove the plastic fluid balancer that contains the 7-12% glass fibre is installed.

Automatic washing machine of the present invention, comprise: the bottom has the washing and dewatering groove of rotary vane, the water jacket of this washing and dewatering groove is housed with freely rotating, this water jacket is prevented the supporting arrangement of seismic support, the drive unit that this rotary vane and this washing and dewatering groove are driven by shell; Wherein: the shell plates and the base plate that constitute this washing and dewatering groove are made by corrosion resistant plate, and this shell plates upper inner of this washing and dewatering groove is equipped with the plastic fluid balancer that contains 10% glass fibre.

The accompanying drawing simple declaration:

Fig. 1 is the profilograph of one embodiment of the invention washing machine.

Fig. 2 is the profilograph of one embodiment of the invention washing and dewatering groove.

Fig. 3 is the profilograph of the washing and dewatering groove of expression prior art example.

Fig. 4 is the rerum natura comparison diagram of FRPP.

Fig. 5 is the rerum natura comparison diagram of FRPP.

Fig. 6 is the average wall thickness of expression fluid balancer and the chart of deflection.

Below in conjunction with description of drawings one embodiment of the invention.

Fig. 1 represents the basic structure of automatic washing machine.

1 is equipped with the shell of the steel plate system that is roughly box-shaped of internal mechanism in being; 2 is stainless steel washing and dewatering groove, be formed with the roughly cylindric of the end, sidewall has a plurality of dewatering hole 2a, and the while is provided with the upper flat weighing apparatus 3 and the lower flat weighing apparatus 4 of the hollow and annular of enclosing fluid in top and bottom, be equipped with revolution agitator arm 5 freely in bottom center.

6 for being equipped with washing and dewatering groove 2 in pivotally, accepting the end being arranged and being roughly water jacket cylindraceous of washings, center base 8 in the bottom by steel plate system is installed drive division, be provided with simultaneously the gooseneck bracket 6a of the concave spherical surface shape that keeps vibration abatement 9 at the lateral wall of water jacket 6, the corner board 1a of four jiaos concave spherical surface shape is to the vibration abatement 9 anti-seismic support that hangs down from the upper end that whole water jacket anchored at shell 1.

In addition, be to prevent washings to fall into water jacket 6 set has plastic groove lid 7 with the gap of washing and dewatering groove 2 in upper end open portion.

Vibration abatement 9 is made up of suspension rod 9a, antirattle spring 9b, sliding cylinder 9c, spring base 9d, suspension rod retainer 9e etc.

The upper end set of suspension rod 9a has the suspension rod retainer 9e with protruding sphere, and the concave spherical surface of retainer 9e and corner board 1a is chimeric.

Sliding cylinder 9c has the protruding sphere chimeric with the concave spherical surface of gooseneck bracket 6a, its inside is provided with antirattle spring 9b, spring base 9d, antirattle spring 9b stretches because of the vibrations of the above-below direction of water jacket 6, then one side friction one side vibrations in the inner face of sliding cylinder 9c of spring base 9d.

Drive division is by motor 10, clutch 11, and v shape belt 12 compositions such as grade are delivered to clutch 11 by motor belt pulley 13, v shape belt 12, P belt pulley 14 with the revolution of motor 10.

Clutch 11 inside have washing and dehydration clutch spring mechanism of switching and reduction gearing etc., also have wash shaft 11a and dehydrating shaft 11b simultaneously.

Agitator arm 5 is fixed on the wash shaft 11a, washing and dewatering groove 2 then is fixed on the dehydrating shaft 11b by flange 15, reduction gearing and wash shaft 11a by inside during washing are delivered to agitator arm 5 with turning power, then by dehydrating shaft 11b turning power are not delivered to washing and dewatering groove 2 by reduction gearing during dehydration and dewater.

Drainage arrangement is made up of draining valve 16, scupper hose 17.One end of draining valve 16 links to each other with the water discharge outlet 6b that is located at water jacket 6 bottoms, and the other end is connected with scupper hose 17.The other end of scupper hose 17 is then drawn outside the machine from scupper hose conveying end 30.

Water level detecting system carries out pressure detecting through airduct 19 by level sensor 20 from the choke box 6c that is located on the water jacket 6.

21 is water-suppling electromagnetic valve, and the one end ties by water hose and water and connects, and the other end then is connected with water filling port 22.

23 for having the loam cake of panel bin portion, and the level sensor 20, power switch 25, input switch portion 26, STA representation portion 27 of control module 24 as control part, control water level etc. taken in its inside.

Panel bin portion 28 is arranged on front side and rear side two places, and is adorning front panel 29 and rear board 30 respectively.

In addition, loam cake 23 is provided with and drops into peristome 23a that the clothing class uses and to the lid 31 that peristome 23a opens and closes, comprise that also the top peristome of shell 1 constitutes.

It more than is whole the composition.

Below in conjunction with Fig. 2 washing and dewatering groove 2 is specified.

Washing and dewatering groove 2 comprises shell plates 41 and base plate 42, is made by corrosion resistant plate respectively.

Shell plates 41 be with flat-plate molded for circular, and, also be provided with a plurality of outside plunging shape dewatering hole 2a with stitching solid welding fixed end portion.

Base plate 42 has roughly discoid shape, and its end peripheral part is connected by seam weldering 2b with the lower end peripheral part of shell plates 41.

The upper end of shell plates 41 is configured as bead-like, diameter diminution part 41a to be set and to improve section factor.

Upper flat weighing apparatus 3 is provided with skirt section 3a at peripheral part, makes the diameter diminution part 41a of itself and shell plates 41 chimeric and fixed with screw 43.

Because diameter diminution part 41a is set, the central portion external diameter of the external diameter of skirt section 3a and shell plates 41 is roughly the same, and does not reduce the gap (about about 15mm) with the inner peripheral surface of water jacket 6.

Lower flat weighing apparatus 4 is provided in the base plate 42 with interior dress form, and fixes with screw 44 from the bottom of base plate 42.

In the central lower of base plate 42 by having with the flange 15 of dehydrating shaft 11b embedded hole portion and screw 45 is installed and washing and dewatering groove 2 is anchored on the dehydrating shaft 11b.

When running dehydration,, thereby produce big vibrations because washing and dewatering groove 2 produces uneven because of its underwear class biasing and with about 1000 rev/mins high speed rotary.

For reducing this vibrations upper flat weighing apparatus 3 and lower flat weighing apparatus 4 are set, yet, can produce the problem that washing and dewatering groove 2 is out of shape and contacts with water jacket because of unbalanced centrifugal force as the undercapacity of washing and dewatering groove 2.

At this moment, though can take the method for washing and dewatering groove 2 with gap (about the about 15mm) increasing of water jacket 6, this body profile change problem big and vibration/noise is also also unsatisfactory.

As the deformation form of washing and dewatering groove 2, have with near the dehydrating shaft junction surface as the whole washing and dewatering groove 2 of single shaft supporting structure be that the center is crooked, the ellipticity distortion and the uneven differential expansion of concentrating the shell plates 41 of portion of the balancing force place shell plates 41 of the balancer of distortion, imbalance and opposite direction effect thereof.

Because washing and dewatering groove 2 bending moments that the bottom adds are main causes of diagonal distortion, thus the combined strength bination of optimal thickness of slab that can be by base plate 42 and shell plates 41 being separated, select base plate 42 and flange 15 with Deformation control below ormal weight.

When the internal diameter of shell plates 41 was 470mm, the thickness of slab of base plate 42 was 1.2mm, and the thickness of slab of shell plates is 0.7mm.

Ellipticity distortion about shell plates 41, prior art is will have on the discoid stainless steel of being roughly of flange ring 46 by seam weldering to be connected with the upper end of shell plates 41 as shown in Figure 3, though can guarantee the pressure ring intensity of shell plates 41, but because the increase of part number, so productivity and cost aspect are then unsatisfactory.

In addition, for the structure of supreme ring 46, dehydrating speed exceeds with about 900 rev/mins.

Therefore, to adopt the upper flat weighing apparatus 3 of polypropylene (below be abbreviated as PP) material to use glass fibre instead in the present invention in the past and strengthen polypropylene (below be abbreviated as FRPP), and crooked elastic rate is improved, and improve the annulus intensity of upper flat weighing apparatus 3, guaranteed most of necessary rigidity.Here, the content of glass fibre is preferably 7-12%, so be set at about 10%.

As Fig. 4 and shown in Figure 5, as increasing the content of glass fibre, the then proportional increase of mechanical strength, but percentage elongation reduction.

Percentage elongation one is low, the little by little impact generation be full of cracks during then sometimes because of assembling or transportation, and the worst situation also can damage, and rumples, and has the problem on the safety.

According to above analysis, as shown in Figure 6, the content of glass fibre is about 10%, the average wall thickness of the upper flat weighing apparatus 3 of hollow and annular body is 3.5mm, then can obtain and has the equal rigidity of structure that goes up ring 46.

At this moment, lower flat weighing apparatus 4 generally adopts PP promptly enough because of being contained in the quilt in the base plate 42.

In addition, because the differential expansion of shell plates 41 occurs in 43 on screw, so even have some girth differences also to control by the skirt section 3a that upper flat weighing apparatus 3 is set.

The inboard of agitator arm 5 integrally be provided with a plurality of in blade 5a, and on interior all side wall surfaces of washing and dewatering groove 2, cooperate and form washings closed circuit 47 with closed circuit cover 48.

Closed circuit cover 48 has to the height on the wall top of washing and dewatering groove 2, and the bottom then faces toward the periphery of lining blade 5a and is provided with water guide peristome 49.

Top at closed circuit cover 48 is provided with discharge opening 50 towards the interior side of washing and dewatering groove 2.

The mounting or dismounting of discharge opening 50 places are being adorned freely and are being inhaled fleece 51.Be provided with a plurality of closed circuits 47, and have the closed circuit of ejection cleaning solution.

During washing, agitator arm one rotates, and then owing to the centrifugal pump effect of lining blade, washings is forced into water guide peristome 49 and passes through closed circuit 47 from discharge opening 50 ejections.

52,53 for being located at the plunging shape osculum in the closed circuit 47.

This be since dehydration when starting in the washings contained water and residual water enter closed circuit 47, thereby produce uneven, for prevent secondary altogether amplitude of vibration strengthen, in the upper and lower osculum is set.

Plunging is in order to prevent that the end of a thread batting etc. from blocking.

Play useful effect under the dehydration starting characteristic good situations of the osculum 52 on top when a small amount of load, the osculum 53 of bottom then works during the load more than intermediate size or under the mild situation of dehydration starting characteristic.So just, can realize the startup of dewatering stably.

In addition, if be provided with about a plurality of diameter 5mm osculum since the washings of stagnating discharge, so quantity of circulating water is not almost influenced.

Adopt the present invention of above explanation, because the material of upper flat weighing apparatus uses the PP (FRPP) that contains the glass fibre about 7-12%, can obtain that productivity is good, the washing and dewatering groove of high rigidity with cheap price, but the automatic washing machine of the compactness of high speed dewatering is provided.

Be to select FRPP among the embodiment in front, even but develop other water filling ports and also can obtain same effect as material.

Claims

1. automatic washing machine, comprise: the bottom has the washing and dewatering groove of rotary vane, the water jacket of above-mentioned washing and dewatering groove is housed with freely rotating, by shell above-mentioned water jacket is prevented the supporting arrangement of seismic support, the drive unit that above-mentioned rotary vane and above-mentioned washing and dewatering groove are driven; It is characterized in that: the shell plates that constitutes described washing and dewatering groove is made by corrosion resistant plate, in the described shell plates upper inner of described washing and dewatering groove the plastic fluid balancer that contains the 7-12% glass fibre is installed.

2. automatic washing machine, comprise: the bottom has the washing and dewatering groove of rotary vane, the water jacket of above-mentioned washing and dewatering groove is housed with freely rotating, by shell above-mentioned water jacket is prevented the supporting arrangement of seismic support, the drive unit that above-mentioned rotary vane and above-mentioned washing and dewatering groove are driven; It is characterized in that: the shell plates and the base plate that constitute described washing and dewatering groove are made by corrosion resistant plate, and the described shell plates upper inner of described washing and dewatering groove is equipped with the plastic fluid balancer that contains 10% glass fibre.